Controlled angle retarder with liquid crystal cell bias tuned for a sequence of wavelengths
US6587172B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2000 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | May 3, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A controlled angle retarder and method for making same is presented. In one embodiment, the invention is a liquid crystal display. The liquid crystal display includes a liquid crystal cell having an extraordinary axis. The liquid crystal display also includes a first retarder connected to the liquid crystal cell, the first retarder having an extraordinary axis. The extraordinary axis of the first retarder is aligned at an angle to the extraordinary axis of the liquid crystal cell. This angle is sufficient to produce a desired effective retardance of the first retarder within the display different from a specified retardance of the first retarder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.